vmlinux.lds.h: Move NOTES into RO_DATA

The .notes section should be non-executable read-only data. As such, move it to the RO_DATA macro instead of being per-architecture defined. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> # s390 Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: linux-alpha@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-c6x-dev@linux-c6x.org Cc: linux-ia64@vger.kernel.org Cc: linux-s390@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Rick Edgecombe <rick.p.edgecombe@intel.com> Cc: Segher Boessenkool <segher@kernel.crashing.org> Cc: Will Deacon <will@kernel.org> Cc: x86-ml <x86@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: https://lkml.kernel.org/r/20191029211351.13243-11-keescook@chromium.org
mariux64 · Nov 4, 2019 · eaf9370 · eaf9370
1 parent fbe6a8e
commit eaf9370
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Showing 26 changed files with 5 additions and 38 deletions.
diff --git a/arch/alpha/kernel/vmlinux.lds.S b/arch/alpha/kernel/vmlinux.lds.S
@@ -34,8 +34,6 @@ SECTIONS
 	swapper_pg_dir = SWAPPER_PGD;
 	_etext = .;	/* End of text section */
 
-	NOTES
-
 	RODATA
 	EXCEPTION_TABLE(16)
 

diff --git a/arch/arc/kernel/vmlinux.lds.S b/arch/arc/kernel/vmlinux.lds.S
@@ -118,8 +118,6 @@ SECTIONS
 	/DISCARD/ : {	*(.eh_frame) }
 #endif
 
-	NOTES
-
 	. = ALIGN(PAGE_SIZE);
 	_end = . ;
 

diff --git a/arch/arm/kernel/vmlinux-xip.lds.S b/arch/arm/kernel/vmlinux-xip.lds.S
@@ -70,8 +70,6 @@ SECTIONS
 	ARM_UNWIND_SECTIONS
 #endif
 
-	NOTES
-
 	_etext = .;			/* End of text and rodata section */
 
 	ARM_VECTORS

diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
@@ -81,8 +81,6 @@ SECTIONS
 	ARM_UNWIND_SECTIONS
 #endif
 
-	NOTES
-
 #ifdef CONFIG_STRICT_KERNEL_RWX
 	. = ALIGN(1<<SECTION_SHIFT);
 #else

diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
@@ -137,7 +137,6 @@ SECTIONS
 
 	RO_DATA(PAGE_SIZE)		/* everything from this point to     */
 	EXCEPTION_TABLE(8)		/* __init_begin will be marked RO NX */
-	NOTES
 
 	. = ALIGN(PAGE_SIZE);
 	idmap_pg_dir = .;

diff --git a/arch/c6x/kernel/vmlinux.lds.S b/arch/c6x/kernel/vmlinux.lds.S
@@ -81,7 +81,6 @@ SECTIONS
 	}
 
 	EXCEPTION_TABLE(16)
-	NOTES
 
 	RO_DATA_SECTION(PAGE_SIZE)
 	.const :

diff --git a/arch/csky/kernel/vmlinux.lds.S b/arch/csky/kernel/vmlinux.lds.S
@@ -53,7 +53,6 @@ SECTIONS
 	RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
 	_edata = .;
 
-	NOTES
 	EXCEPTION_TABLE(L1_CACHE_BYTES)
 	BSS_SECTION(L1_CACHE_BYTES, PAGE_SIZE, L1_CACHE_BYTES)
 	VBR_BASE

diff --git a/arch/h8300/kernel/vmlinux.lds.S b/arch/h8300/kernel/vmlinux.lds.S
@@ -38,7 +38,6 @@ SECTIONS
 	_etext = . ;
 	}
 	EXCEPTION_TABLE(16)
-	NOTES
 	RO_DATA_SECTION(4)
 	ROMEND = .;
 #if defined(CONFIG_ROMKERNEL)

diff --git a/arch/hexagon/kernel/vmlinux.lds.S b/arch/hexagon/kernel/vmlinux.lds.S
@@ -54,7 +54,6 @@ SECTIONS
 	_edata = .;
 
 	EXCEPTION_TABLE(16)
-	NOTES
 
 	BSS_SECTION(_PAGE_SIZE, _PAGE_SIZE, _PAGE_SIZE)
 

diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S
@@ -70,8 +70,6 @@ SECTIONS {
 	/*
 	 * Read-only data
 	 */
-	NOTES
-
 	EXCEPTION_TABLE(16)
 
 	/* MCA table */

diff --git a/arch/microblaze/kernel/vmlinux.lds.S b/arch/microblaze/kernel/vmlinux.lds.S
@@ -53,7 +53,6 @@ SECTIONS {
 	. = ALIGN(16);
 	RODATA
 	EXCEPTION_TABLE(16)
-	NOTES
 
 	/*
 	 * sdata2 section can go anywhere, but must be word aligned

diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S
@@ -81,8 +81,6 @@ SECTIONS
 		__stop___dbe_table = .;
 	}
 
-	NOTES
-
 	_sdata = .;			/* Start of data section */
 	RODATA
 

diff --git a/arch/nds32/kernel/vmlinux.lds.S b/arch/nds32/kernel/vmlinux.lds.S
@@ -58,7 +58,6 @@ SECTIONS
 	_edata  =  .;
 
 	EXCEPTION_TABLE(16)
-	NOTES
 	BSS_SECTION(4, 4, 4)
 	_end = .;
 

diff --git a/arch/nios2/kernel/vmlinux.lds.S b/arch/nios2/kernel/vmlinux.lds.S
@@ -58,7 +58,6 @@ SECTIONS
 
 	STABS_DEBUG
 	DWARF_DEBUG
-	NOTES
 
 	DISCARDS
 }
diff --git a/arch/openrisc/kernel/vmlinux.lds.S b/arch/openrisc/kernel/vmlinux.lds.S
@@ -79,7 +79,6 @@ SECTIONS
         _edata  =  .;
 
 	EXCEPTION_TABLE(4)
-	NOTES
 
 	/* Init code and data */
 	. = ALIGN(PAGE_SIZE);

diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S
@@ -131,7 +131,6 @@ SECTIONS
 
 	/* RO because of BUILDTIME_EXTABLE_SORT */
 	EXCEPTION_TABLE(8)
-	NOTES
 
 	/* unwind info */
 	.PARISC.unwind : {

diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
@@ -164,8 +164,6 @@ SECTIONS
 #endif
 	EXCEPTION_TABLE(0)
 
-	NOTES
-
 /*
  * Init sections discarded at runtime
  */

diff --git a/arch/riscv/kernel/vmlinux.lds.S b/arch/riscv/kernel/vmlinux.lds.S
@@ -69,7 +69,6 @@ SECTIONS
 	BSS_SECTION(PAGE_SIZE, PAGE_SIZE, 0)
 
 	EXCEPTION_TABLE(0x10)
-	NOTES
 
 	.rel.dyn : {
 		*(.rel.dyn*)

diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
@@ -52,8 +52,6 @@ SECTIONS
 		_etext = .;		/* End of text section */
 	} :text = 0x0700
 
-	NOTES
-
 	RO_DATA_SECTION(PAGE_SIZE)
 
 	. = ALIGN(PAGE_SIZE);

diff --git a/arch/sh/kernel/vmlinux.lds.S b/arch/sh/kernel/vmlinux.lds.S
@@ -48,7 +48,6 @@ SECTIONS
 	} = 0x0009
 
 	EXCEPTION_TABLE(16)
-	NOTES
 
 	_sdata = .;
 	RO_DATA(PAGE_SIZE)

diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S
@@ -78,7 +78,6 @@ SECTIONS
 		__stop___fixup = .;
 	}
 	EXCEPTION_TABLE(16)
-	NOTES
 
 	. = ALIGN(PAGE_SIZE);
 	__init_begin = ALIGN(PAGE_SIZE);

diff --git a/arch/um/include/asm/common.lds.S b/arch/um/include/asm/common.lds.S
@@ -16,7 +16,6 @@
   PROVIDE (_unprotected_end = .);
 
   . = ALIGN(4096);
-  NOTES
   EXCEPTION_TABLE(0)
 
   BUG_TABLE

diff --git a/arch/unicore32/kernel/vmlinux.lds.S b/arch/unicore32/kernel/vmlinux.lds.S
@@ -48,7 +48,6 @@ SECTIONS
 	_edata = .;
 
 	EXCEPTION_TABLE(L1_CACHE_BYTES)
-	NOTES
 
 	BSS_SECTION(0, 0, 0)
 	_end = .;

diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
@@ -148,8 +148,6 @@ SECTIONS
 		_etext = .;
 	} :text = 0x9090
 
-	NOTES
-
 	EXCEPTION_TABLE(16)
 
 	/* .text should occupy whole number of pages */

diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S
@@ -131,7 +131,6 @@ SECTIONS
   .fixup   : { *(.fixup) }
 
   EXCEPTION_TABLE(16)
-  NOTES
   /* Data section */
 
   _sdata = .;

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
@@ -28,7 +28,6 @@
  *	_edata = .;
  *
  *	EXCEPTION_TABLE(...)
- *	NOTES
  *
  *	BSS_SECTION(0, 0, 0)
  *	_end = .;
@@ -512,10 +511,12 @@
 		__start___modver = .;					\
 		KEEP(*(__modver))					\
 		__stop___modver = .;					\
-		. = ALIGN((align));					\
-		__end_rodata = .;					\
 	}								\
-	. = ALIGN((align));
+									\
+	NOTES								\
+									\
+	. = ALIGN((align));						\
+	__end_rodata = .;
 
 /* RODATA & RO_DATA provided for backward compatibility.
  * All archs are supposed to use RO_DATA() */